Resilient track with movable elements



Jan. 27, 1931. A, E E 1,790,098

RESILIENT TRACK WITH MOVABLE ELEMENTS Origirlal Filed Feb. 3. 1928 E /mg; 51W

I I II u 3 my 5 INVf/V/U/i im 3% awn ii [EH ii/[IE Hi 1 5 2 Aim/Mr Patented Jan. 27, 1931 p s UNITED STATES ADOLIHE x iennssn, orsuimsnns, m -E nnslmniv'r Timex wrrrr Movanin mamas Original application filed February 3,1928, Serial No. 251,644, and in Franceand thisapplication filed May 10,- eaa, Serial 110. states,

The present invention has reference to endless flexible track belts of the type in which a positive drive for the belt is employed; and

. it embodies certain improvements, hereinafter described, in orrelating to the'construm 5 accordance with this invention;

7 the belt; and

tion of the belt proper as well as toits driving system, the invention being essentially a-division of that disclosed in my prior application No. 251,644, filed February 3, 1928, to which reference may be had for a more complete understanding. 7 i

,In thev accompanying drawings: Figure l-is a fragmental side view showing the mounting of a track belt constructed in Fig. 2 is a transverse section thereof;

Fig. 3 is a fragmental outer plan view of Fig. et'is a similar inner plan view, Referring moreparticularly to the drawings, the core or body of the beltis' constituted by an endless band or element 1', the two faces of which are flat;said band being made of suitable flexible material, such as leather, or rubberized canvas, or in the form of a flexible metal strip, or of cables which mayor may not be embedded inrubber, or in any way.

On the inner face of the band there is provided an extra thickness 2, serving as'a trackother way for the rollers 3 of the carrier train,

This extra thickness, as is clearly shown in Fig. 2, does not extend over the whole width of the band 1 but is limited approximately to the width of the said rollers 3, so that a special treadway or track is thus obtained, the

ultimate wear and tear of which will'not' affect the band itself. 7 V v The drive is eifected in the same way as that disclosed in theabove-identifiedparent casei. e., by means of. drivingteeth or lugs teeth 4 are constituted by small independent blocks made of suitable material, such as steel,

secured tothe bandrl by means of 'bolts 5 whichpass through said band as well {as throu'gh'metal plates 6 hereinafter referredto, the heads ofthe bolts -bearing'againstthe plates (Fig.2). The lugs are arrangedin' two rows whichextend adjacent-the opposite,

sideedges of band 1, andthe'seats'7 wherein I ebr'iiary 9, 1927.. Divided wood, rubber,agglomerate,etc. {and they a're v they are designe'd to engage are likewise'ar;

there ismounted on the'band (more properly,

along the median line of the roller trackway 2i thereof), for the entire, length of the band afseriesofblocks 9 which coact with the car- 7 "rier rollersi3 to guide the band during its movementsfi'lhe metal "plates 6 previously mentioned are arranged transversely, on, the outer or ground engagingface ofthe band, I 'adjacentto and, almost contacting'with one I another, and they'carry ribs' 10 which impart the requisite resistance thereto and which can alsodo duty as grippers on soft ground. Two

' of the driving lugsor teeth 4 are secured'to each plate at opposite sides of the respective i.

' guide-block:9";'and in the same straight line with the lugs there is also arranged the bolt 11 which removably fastens the guide blocks other lengthwise the band and-'conjointly forming 'a continuous ground tread for travel on roads and other hard ground. In order to insure better ground grip, the shoes may be arranged in slightly staggered relation (Fig.

3), without such arrangement interfering. With the continuity of the tread; and said shoesfa re removably fastened to the endless band land the plates 6 by the same bolts 11 that secure theguide blocks 9 thereto, so that there is, therefore, on said'band, an equal number of blocks, plates, shoes and assembly bolts. p The plates 6, as shown in Fig. 2, are provided at their opposite ends with flanges13 and the platesto the band 1, such'lin'e being 7 parallel to the'axes' of the carrier rolls 3.

portance. I 1 Iclaim as my inventionz+ i A 1;}. r 7 Y which are curved slightly outward in a direcing around the driving'and supporting pulleys.- Such rubbing, as will heiunderstood,

' tendstto produce wear onthe'handfed'ges leaving spaces into which particles oi'qdirt;

and other extraneous materials. may enter ;v

these particles exerting a damaging iiifluence 1 on the band, so that the avoidance of wearon I y v H e the band edges is, therefore, amatt'er of im- 1. An endless track belt comprising 'an" endless flexible-hand having OILlt S inner sur:

face'an extra thicknessarranged along its median portion and of a width substantially less than that of the banditselisoastoproide acontinuoustrackway the opposite-longitudinal" edges-of whichare appreciably v spaced from the handedgesyaseries .of-metal a Eplates securedtransversely to the outer surface of the band; and two: rows=ot driving lugs applied directly to the said inner sur- V face of the band outside the longitudinal edges of said trackway and securedto said band and to the plates 2. Anendless'track helt comprising an en'd- V: In lessfl'exible band having on itslinner surface an extra thickness arranged along itsmedian portion and of a width substantially less than a i I that of the'band itselfsoaato provide acontinuous trackway the opposite edgesof which areappreciably spacedfro-rn theband edges;

a series-of metal plates se'curedtransversely to the]outersurface ottheband'withtheir V side, edges in: virtualabutting relation ;-v a

longitudinal series 015 guide blocks disposed on the inner surfaceof said band-along its median line; a longitudinal series of elastic 1 I shoes disposed against theoutersurface of theband directly opposite therguide-blocks; V and bolts passing ,throughthefband, guide blocks, shoes and plates for removab'ly securingthem together.

3. An endless track belt according'to: claim 2, in which the plates have their-ends: pro- ;I jecting beyond the side edges of the hand and V curved in a direction away from the band.-

In; testimony whereof I afiix my signature.

ADOLPHE KEGRESSE. 

